hopkins



(No Model.) 2 Sheets-Sheet 1.

W. H; HOPKINS.

ICE CREAM FREEZER.

No. 486,779. Patented N 0v. 22 1892.

(No Model.) 2 Sheet-Sheet 2.

w; H. HOPKINS.

ICE CREAM FREEZER.

No. 486,779. I Patented Nov. 22, 1892.

7. m r5 01? 6? gwi 60 PATENT OFFICE.

WILLIAM H. HOPKINS, OF CHICAGO, ILLINOIS, ASSIGNOR TO WILLIAM THOMPSON & CO.,

OF SAME PLACE.

ICE-CREAM FREEZER.

SPECIFICATION forming part of Letters Patent No. 486,779, dated November 22, 1892.

Application filed February 20, 1892. Serial No. 422,219. (No model.)

-To all whom, it may concern:

Be it known that I, WILLIAM H. HOPKINS a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois,have invented certain new and useful Improvements in Ice-Cream Freezers, of which the following is a full, clear, and exact description,that will enable others to make and use the same, reference being had to the accompanying drawings, forming a part of this specification, in which Figure 1 is a side elevation and part seetion; and Fig. 2,a broken-away enlarged sec- -t1on, showing the freezing-tub and cream-recess back from the front to receive the geared driving mechanism. The branch arm a of the frame supports the back journal-bearing a of the driving-shaft B, on the rear part of which are mounted a fiy-wheel B and band-- pulleys B B belting with the motive power. The front end of the horizontal driving-shaft passes through and is journaled in the headpiece of the frame and projects far enough into recess a between the forked end to have the miter cog-wheel C,mounted on the terminal end thereof, as shown in Fig. 1. The collar a", mounted on the driving-shaft back of the front bearing, serves to retain the shaft in its proper position against a forward thrust or movement. The respective fork ends of the head-piece are perforated vertically to pro- .Vide bearings for the prolonged hub or sleeve parts of the miter cog-wheels D and E, which are arranged in the relative position shown with reference to cog-wheel C--that is, at right angles above and below the same. The sleeve part b of the wheel D is retained in place by collar b',secured to the upper end, and is rigidly mounted on the upper partof spindle F. The cog or gear wheel D engages with companion wheel C on the upper side. The hub or sleeve extension I) of companion wheel E loosely incloses the lower part of spindle F. The end of this sleeve extends below the end of the inclosed spindle and is provided with a square recess or socket b adapted to receive the correspondingly shaped shoulder 19 formed centrally on the exterior top of the cover I) of the cylindrical cream-receptacle G. This cover b is attached to the said receptacle by means of any suitable fastening device, whereby any motion imparted to one will also be imparted to the other. The lower end of spindle F, stopping short of socket 12 is provided with a recess d, so as to receive-or engage with the upper flattened end 01 of the agitator or dasher shaft H, projecting up through the shoulder formation of the cover. The cog-wheel E engages with the under side of the driving-wheel C. By this arrangement the cream-receptacle is rotated in one direction and the agitator or dasher H in the opposite direction as the companion wheels D and E are driven in opposite directions. The movable platform J is mounted on the supporting-base just under the overhanging part of the frame in which the driving mechanism is journaled. This platform is provided centrally on the under side with a lugd extendin g down into the chambered supporting-base. A horizontal rocking lever K is located in the base and is mounted on the pivot or fulcram-pin (i The forward end of this lever is pivoted, asat d, to the lug 11 The opposite end of this lever is pivoted, as at e, to the lower end of the rack-bar L, extending upwardly inside of the frame-standard. This rack-bar is provided with a series of teeth c, with which pinion e engages. This pinion is mounted on shaft e journaled in the I supporting-standard. On the outer end of shaft e outside of the standard, is mounted gear-wheel e (Indicated by dotted lines.) The crankshaft g is also j ournaled in thesupporting-standard and has pinion g mounted thereon, which engages with gear-wheel 6 One end of hand-crank g is mounted on said crank-shaft, the opposite end being provided with handle 9 Pawl 9 looks pinion g in a thereon.

stationary position. By this arrangement and connection of mechanism described plat form J may be raised or lowered, as required. The platform is shown in its lowermost position, ready for the placing of the freezing-tub When the tub containing the creamreceptacle is placed in position, the handcrank should be turned in the proper direction to forcethe rack-bar down wardly,which movement will elevate the platform, so as to throw the shoulder on cover 19 and the flattened end d of agitator-shaft H into engagement with the socket-bearing in lower end of sleeve b and the recess 01 in the lower end of spindle F. When theprocess of freezingiscom pleted, the platform is dropped in the same manner, the tub removed and replaced by another, thus conveniently and quickly engaging with or disengaging from the rotary mechanism.

The movable platform is provided with a number of clamping-bolts g, which may be set to retain the tub in proper position with reference to the rotating mechanism.

The lower or bottom end 77. of the cream-receptacle is provided with the bearing-boss h recessed in the under side to receive the conical bearing-point 72, projecting upwardly from the plate h fastened to the interior bottom of the inclosing tub P. The lower end of the dasher-shaft terminates in the bearing-point 72. which seats in a corresponding recess formed in the upper side of boss h. The annular space between the inclosing tub and the cream-receptacle is for the reception of the ice or freezing composition.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a freezing apparatus of the character described, the combination, with the freezer proper and mechanism for rotating the movable parts thereof, of a verticallymovable platform carrying said freezer, a rocking lever pivoted at one end to the under side of said platform, a rack-bar pivoted at its lower end to the opposite end of the rocking lever, and means,substantially as described, for imparting a vertical endwise movement to said rack-bar, whereby said platform may be elevated or depressed, substantially as described.

2. In a freezing apparatus of the character described, the combination, with the freezer proper, and mechanism for rotating the movable parts thereof, of a verticallymovable platform, a rocking-lever pivoted at one end thereto, the rack-bar pivoted at its lower end to the rear end of the rocking lever, the pinion engaging with the toothed end of said bar, the gear-pinion mounted thereon and engaging with said gear-wheel, and means for rotating said crank-shaft, substantially as described. I

3. In a freezing apparatus of the character described, the combination, with the freezer proper and mechanism for rotating the movable parts thereof, of a supporting-frame comprising a' chambered base and hollow standard, a vertically-movable platform adapted to receive the freezer and mounted on said base and having a projecting part extending down into the chamber, a rocking lever located in said chamber and pivoted at its front end to said projecting part, a rack-bar pivoted at its lower end to the rear end of said lever and eX- tending upwardly on the inside of said standard, and means, substantially as described, for imparting an endwise movement to said rackbar for elevating or depressing the platform, substantially as described.

4. In a freezing apparatus of the character described, the combination, with the sleeve 19 having a bearing-socket in its lower end, the spindle F, loosely inclosed by said sleeve and having a recess in its lower end, and means for-imparting rotary motion to said sleeve and spindle in opposite directions, of a verticallymovable platform J and the cream-receptacle G, and agitator H, carried thereby, said receptacle and agitator being adapted to simultaneously engage with the sleeve 5 and shaft F, respectively, upon the upward movement of the platform J, substantially as described.

' WVILLIAM H. HOPKINS. Witnesses:

L. M. FREEMAN, L. B. GoUPLAND. 

